O.S. Engines

Cylinder & Piston: B21 Speed Adam Drake

Spring Choke Friction: WLA-2, GT55

M2002SC 80mm Manifold: 21XZ-B, 21VZ-B, 25XZ, 30VG

Cylinder Head: 46AXII

Carburetor 61C: 95AX

Crankcase: GF30

Piston Ring: 60-61

Piston Pin: 21XZ-R

Ball Link No.5 18TM

Piston Pin: 91RZ-H Ring Heli

Cover Plate: FS-120 III

Rear Cover: Sirius 7

Cylinder Jacket: Sirius 7

Dust Cover: 30VG

Carburetor 61H: GT15

Front Crankshaft Bearing: Speed T1202

Pushrod Cover Set: Sirius 7

Throttle Lever Nut #10ER

Needle Valve Assembly #11H #11HB

Cover Plate Screws (10): 120AX

Cylinder Brass Head Gasket: 75AX

105HZ-R DRS 1.05 Helicopter Engine

Piston Pin: 50SX-H

Piston Ring: FT-300